Improved window-buttoh



@sind gitarre tiatwi (tj it,

n. K. BRECKENRIDGE, or weer MERIDEN, CONNECTICUT.

Letters Patent No. 97,348, dated November 30, 1869.

IMPROVED WINDOW-BUTTON.

The Schedule referred to iu these Letters Patent and making part of the same.

To all whom it may concern marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of thisspecification, and represent, in

Figure 1, a top view; i

Figure 2, a side view through the division ot the plates,ilooking toward the lever; and in Figure 3, a side view of the other part or keeper, looking toward the front.

This invention relates to an improvement in Athat class of sash-fasteners which 4is applied to the meeting-rails of two sashes, alever being xed to one sash, and so as to be turned ou to and over a keeper on the other sash, to clamp the sash ytogether and hold them locked.

The object of this inwention is an improvement in this class of sash-fasteners, whereby the keeper and lever-plate may be forced into the required position, for the working of the lever, to overcome a difficulty which exists when there is a lateral play to thesash,

so that they move `more or less to one side or theother out of position, whereas to the perfect working of the lock, the lever-plate and keeper shouldY be brought into a certain given position; to this end,

My'invention consists in forming a tongue or projectionl on the keeper-plate, projecting beyond the edge of the sash on to the lever-plate, the edges of this projection being inclined downward, and on the leverplate, forming a recess, the edges of which are inclined upward, so as to receive a projection from the other plate.

To enable others skilled in the art to make and use my invention, I will proceed'to describe the same, as illustrated in the accompanying drawings.

A is the lever-"plate, provided with the usual locking-lever B,`a`nd 'applied` to the sash, in the usual manner.

C is the keeper-plate, corresponding to the leverplate A, and applied to the other part of the sashalso in the usual manner.

When thus applied, it there happens to be (as there usually is) play between the sash and traine, so that the sash may pla'y to one side or .the other, before the lever can be turned, it is necessary to bring the sashes into a central position, so that the two plates correspond the one to the other, and as this must be done by the' person closing the sash, it is a source of no little annoyance.

'lo avoid this, I form a tongue or projection, a, upon the keeper-plate, and a corresponding recess, d, in the lever-plate, as seen in figs. L. and 3.

The edges of the projection c are inclined inward, while the edges of the recess cl are inclined outward.

Now, when the lower sash, to which the keeperplate is applied, is brought down, (or the other sash up, as the case may be,) the projection a. will strike into the recess,and the inclined edges of the two coinbined will force the sashes to onev side or the other, until they properly meet, and are iucorresponding positions,I as seen in tig. 1. n

Another advantage incident to my invention, is in the fact that the projection c extending over the joint between the two plates, and under the lever when it is locked,rso closes the joint that it is impossible to 'operate the lever betweenthe two sashes fromthe outside.

Having fully described my invention,

\Vhat1 claim as new and useful, and desire to secure by Letters Patent, is-

The projection c on the keeper-plate C, combined with the corresponding recess d in the lever-plate, constructed and arranged so as to operate substantially as described. v j

\Vitnesses: E. K. BRECKENRIDGE. A. J. Tlrrs,

J. H. SHUrrwAY. 

